// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once

#include <pollux/dwio/common/selective_column_reader.h>
#include <pollux/dwio/dwrf/reader/column_reader.h>
#include <pollux/dwio/dwrf/reader/dwrf_data.h>

namespace kumo::pollux::dwrf {

/// Wrapper for static functions for making DWRF readers
class SelectiveDwrfReader {
 public:
  static std::unique_ptr<dwio::common::SelectiveColumnReader> build(
      const TypePtr& requestedType,
      const std::shared_ptr<const dwio::common::TypeWithId>& fileType,
      DwrfParams& params,
      common::ScanSpec& scanSpec,
      bool isRoot = false);

  /// Compatibility wrapper for tests. Takes the components of DwrfParams as
  /// separate.
  static std::unique_ptr<dwio::common::SelectiveColumnReader> build(
      const TypePtr& requestedType,
      const std::shared_ptr<const dwio::common::TypeWithId>& fileType,
      StripeStreams& stripe,
      const StreamLabels& streamLabels,
      dwio::common::ColumnReaderStatistics& stats,
      common::ScanSpec* scanSpec,
      FlatMapContext flatMapContext = {},
      bool isRoot = false) {
    auto params = DwrfParams(stripe, streamLabels, stats, flatMapContext);
    return build(requestedType, fileType, params, *scanSpec, isRoot);
  }
};

} // namespace kumo::pollux::dwrf
